scispace - formally typeset
Search or ask a question
Topic

Voltage regulator

About: Voltage regulator is a research topic. Over the lifetime, 33536 publications have been published within this topic receiving 350859 citations.


Papers
More filters
Patent
31 Jul 2008
TL;DR: In this article, a voltage converter consisting of four capacitors, a switch circuit Q1-Q4, an inductor L and a controller 503 is described, where the switch circuit is controlled by a PWM signal to half the input voltage VIN to provide a first output voltage VOUT1 on the first output node 105, and the second output voltageVOUT2 via the inductor.
Abstract: A voltage converter 501 including a capacitive voltage divider combined with a buck converter 117 and battery charger 504. The converter includes four capacitors, a switch circuit Q1-Q4, an inductor L and a controller 503. The capacitors form a capacitor loop between an input node 101 and a reference node GND and include a fly capacitor C2 controlled by the switch circuit, which is controlled by a PWM signal to half the input voltage VIN to provide a first output voltage VOUT1 on a first output node 105, and to convert the first output voltage to the second output voltage VOUT2 via the inductor. The controller controls the PWM signal to regulate the second output voltage, and provides a voltage control signal VC to control the input voltage to maintain the first output node between a predetermined minimum and maximum battery voltage levels. A battery charge path is coupled to the reference node and battery charge mode depends upon the battery voltage.

68 citations

Proceedings ArticleDOI
16 Mar 2014
TL;DR: In this article, the authors discuss the principles of operating the electric spring (ES) as a reactive power compensator and as a power factor corrector, and propose an input current control scheme for ES with batteries to validate its capability in power factor correction.
Abstract: In this paper, we discuss the principles of operating the electric spring (ES) as a reactive power compensator and as a power factor corrector. The theory on electric springs with capacitors for voltage stabilization is reviewed to present a general idea on the behavior of ES. Further discussion focuses on the principle of ES with batteries to cover its eight possible operating modes and their usefulness in providing line current regulation. An input current control scheme is designed for ES with batteries to validate its capability in power factor correction. A low-voltage single-phase power system with different types of loads has been built for verifying the feasibility of proposed theory of ES with batteries. Experimental results show that the ES is capable of performing the eight operating modes when changing the power consumption of the non-critical load, and that with the proposed input current control, the ES can achieve power factor correction for both RL and RC loads.

68 citations

Journal ArticleDOI
20 Jun 1994
TL;DR: In this article, a new PWM method for neutral-point-clamped (NPC) inverters is introduced, which is based on closed-loop control of the line-to-line voltage vectors.
Abstract: A new PWM method for Neutral-Point-Clamped (NPC) inverters is introduced. The method is based on closed-loop control of the line-to-line voltage vectors. It uses independent hysteresis comparator controllers to regulate the direct and quadrature axis components of the three phase output voltages. The controllers select the appropriate inverter output voltage vectors through an EPROM table. The closed-loop control allows a high performance over the whole range of operation, even when low speed devices such as the GTO are used. A neutral-point potential control is described, which is capable of stabilizing the variations within fixed limits during steady and transient states. The principle of the method is discussed and the vector selection technique is presented. The effectiveness in the output-voltage-waveform generation and the balance of the DC-link capacitor voltages are verified by simulation and experiment. >

68 citations

Patent
Bruce W. Rose1
13 Dec 2000
TL;DR: A voltage regulator system includes a plurality of individual voltage regulators that are compounded to provide both high output current capability and low quiescent current at low load currents as mentioned in this paper, which is called a multiplicative voltage regulator.
Abstract: A voltage regulator system includes a plurality of individual voltage regulators that are compounded to provide both high output current capability and low quiescent current at low load currents.

68 citations


Network Information
Related Topics (5)
Voltage
296.3K papers, 1.7M citations
92% related
Capacitor
166.6K papers, 1.4M citations
91% related
Electric power system
133K papers, 1.7M citations
90% related
Wind power
99K papers, 1.5M citations
83% related
Control theory
299.6K papers, 3.1M citations
82% related
Performance
Metrics
No. of papers in the topic in previous years
YearPapers
202382
2022212
2021320
2020699
2019947
2018973